Metal working press



y 1932- R. w. GLASNER ET-Al. 66,595

METAL WORKING PRESS Filed Nov. 29. 1929 4 Sheets-Sheet 1 Ju y 9 R. w.GLASNER ET AL 1,866,595

' METAL WORKING PRESS Filed Nov. 29, 1929 4 Sheets-Sheet 2 y 1932- R. w.GLASNER ET AL 1,866,595

METAL WORKING PRES S Filed Nov. 29, 1929 v 4 Sheets-Sheet 3 y 1932- R.w. GLASNER ET AL 1,866,595

METAL WORKING PRESS Filed Nov. 29, 1929 4 Sheets-Sheet 4 2X9 meme July12, 19325 UNITED s'r 'ra-s PATENT- OFFICE. 7

RUDOLPH W. GLABNEB AND FRIEDRICH J. RUDE, OFGHICAGO, ILLINOIS RETAILWORKING PRESS Application filed November as, 1929. Serial No. 410,317.

:8 of the invention is to provide means whereby presses of thischaracter now in use may be provided with adjustment means in additionto the adjusting means now, or usually employed in such presses. a

A further object is to provide in a machine of this character cushioningmeans for yieldingl resisting the movement of the blank or worlz holder1n one direction while the bed is maintained or locked in a fixedposition,

o and improved means for releasing the bed,

whereby the cushioning agent will serve as {1)- nliedium for eflectingthe adjustment of the A furthe object is to provide in a press of thischarac er a combination of cushioning means for the work and raisingmeans for the bed of the press and embodying a reservoir,

which reservoir and cushioning means constitute a part and parcel of thepress, the cushioning means being operable independently of the meansfor locking the press bed. A further object is to provide improved meansfor locking and releasing the bed, and improved means whereby thelocking means maybe rendered active and inactive by fluid pressure.

To the attainment of these ends and the accomplishment of other new anduseful'objects as will appear, the invention consists in the features ofnovelty in substantially the construction, combination and arrangementof the several parts hereinafter more fully described and claimed andshown in the accompanying drawings illustrating this invention and inwhich Figure 1 is a view partly in elevation and partly in verticalsection .of a portion of a press of this character, with parts omitted,and constructed in accordance with the principles of this invention.

Figure 2 is an enlarged detail sectional view of the locking mechanism,showing the parts in a position different from that shown in Figure 1,and as taken on line 2-2, Figure 3.

Figure 3 is an irregular sectional view taken I on' line 3-.3, Fi re 2.

Figure 4 is a detail sectional" view of,the controlling valve.

Figure 5 is an irregular sectional view taken on line 5-5, Figure 2.

Fi ure 6 is a face view of one of the locking mem rs.

Figure 7 is a face view of the co-operating locking member.

Referring more particularly to the drawings the numeral 10 designatesthe supporting structure of a press providedwith a re ciprocable ram 11,to which a die 12 isattached. The ram is reciproca'ble from a crankshaft 13 through the medium'of links 14, power being applied to theshaft froman suitable source through the medium of a u ley 15, a gear 16and a gear 17, the latter eing connected with the crank shaft.

, All of the above referred to parts are of the ordinary and well knownconstruction.

In the present form of the invention the numeral 18 designates the bedof the press u on which a die 19 is supportedand which d1e cooperateswith the die 12 to operate upon the work 2 0.

The bed 18 is adjustable with respect to the supporting structureandalso vertically, in a manner to be hereinafter set forth.

Connected with the bed 18 and depending therebelow are toothed members21 having any desired numbenof teeth, and the mem- I bers 21 areprovided with openings 22 there-. in, any number of which may beprovided, 55 for a purpose to be set forth.

Mounted upon the supporting structure is a toothed member-23 whichco-operates with the toothed member 21. I

One pair of these co-operating members 2123 is arranged on each side ofthe press and any number of pairs may be employed, and as theconstruction and operation is the same, the specific description of onewill apply equally to them all.

' collars 26. The bolts 25 are of a length to permit the member 23 to bemoved toward and away from the locking member 21 from the position shownin Figure 1, to the position shown inFigure 2.

Secured to a. suitable support preferably forming a part of thesupporting structure 10, and in any suitable manner, is a cylinder 27 inwhich is arranged a piston 28. Connected with the piston is a piston rod29, the extremity 30 of which projects beyond the active face of theteeth 31 of the member 23 andois adapted to enter one of the openings 22to insure the proper positioning of the teeth 31 with respect to theteeth of the member 21. The extremity 30 of the piston rod-29 enteringone of the openings 22 will guide the teeth 31 in the proper positionwith respect to the teeth of the member 21 and unless the extremity 30does enter one of the openings 22 the teeth 31 will be held in aposition that they will not contact with the ends of the teeth of themember 21.

The piston rod 29 is connected with the member .23 in anysuitable'manner such as by means of a pin 32 passing therethrough sothat as the piston 28 is reci rocated inv the cylinder 27, the member 23Wlll be moved forwardly and backwardly.

Any suitable means may be provided for moving the piston 28, and to thatend fluid pressure may be employed, the cylinder bemg provided with anopening 33 on one side of the piston 28 and to which opening a pipe 34is connected, the pipe in turn being connected with a valve casing 35 inwhich a valve 36 is adapted to be rotated by means of a handle 37.Connected with the valve casing 35 is a pipe 38 which leads from asuitable source of fluid supply. Leading also from the valve casing is apipe 39 which has communication with the cylinder 27 on the op ositeside of the piston 28.

Leading also from the valve casing 35 is an exhaust pipe 40. Thus itwill be seen that by moving the handle 37 to position the'valve as shownin Figure 4, fluid pressure will be supplied through the pipe 38,through the pipe 34, through the opening 33, into the cylinder 27 on onesideof the piston to move the piston to the ositionshown in Figure 1, tolock the bed 1'8 against movement. At the same time any fluid pressureon the opposite side'or' the piston 28 in the cylinder 27 will beexhausted through the pipe 39, through the valve casing 35, to bedischarged through the exhaust 40.

Likewise, when the handle '37 is moved to adjust the valve 36 so as toform communication between the pipes 38 and 39 in the valve casing 35,the fluid pressure will be delivered to the other side'o'f the piston 28and the other side will be open to the exhaust 40, so that the pistoncan be moved to the position shown in Figure 2, and thereby release orunlock the bed 18 of the press.

Formed within the press structure and constituting a part and parcelthereof, is atank or chamber 41, which may be of any desired size andconfiguration. Projecting through-the top 42 of the chamber are tubularmembers or guides 43, in which plungers or pistons 44 arereciprocable,'and any number of these guides and plungers may beprovided.

Supported by the plungers is a pad 45 which is arranged beneath the bedplate 18 and passing through the bed plate 18 and engaging and restingupon the pad 45 are pins 46 which support a work holder 47 thatcooperates with the die 12 to clamp the work 20. This work holder 47preferably encompasses the die 19.

Fluid pressure is admitted into the chamber 41 from any suitable sourceof supply through'a pipe 48 in which is arranged a control valve 49, andwhich pipe 48 connects with the pipe 50, discharging in the chamber 41.

Leading fromthe pipe 50 is a branch 51 having a pressure regulatingvalve 52 therein and a shut off valve 53.

When the valve 53 is closed and the valve 49 open, fluid pressure willenter the chamber 41 and when the bed plate 18 is locked and in thepostion shown in Figure 1, the pistons or plungers 48 by the action ofthe fluid pressure therein, will hold the pads 45 against the lower faceof the bed plate 18 so as to support the work holder 47 flush with thetop of the die 19.

When the ram 11 descends and the die 12 contacts with the work a furtherlowering movement of'the ram will shape the work 20 over the die 19, andthe movement of the work holder 37 under the action of the ram 12 willbe yieldingly resisted by the fluid pressure in the chamber 41. When thepressure in the chamber 41 overcomes the pressure at which the valve 52is set, the fluid will escape through the pipe 50, pipe 51, into thepipe 48, back to the source of supply. The press will operate in thismanner as long as the bed plate 18 is locked.

When it is desired, however, to raise thebed pl ate 18 to compensatedifferent sized dies or the nature of the work being performed and tomaintain the top working points of the dies at substantially the samelevel for the operator, the bed plate 18 is released in the manner asalready described by operating the lever 37 of the valve 36 to withdrawthe locking members 23 to the position shown in Figure 2. When thusreleased the fluid pressure in the chamber 41, and which acts as theresistance agent to the work holder 47 when the bed plate is locked,will operate to raise the bed plate 18 to the desired level, after whichthe lever 37 is operated again to cause assume the locking member 23 tomove into locking engagement with the members 21 on the bed 18.

In order to lower the bed plate 18 the looking members 23 are shifted torelease the bed plate, and a .valve 54 in the pipe 50 is opened so as topermit the fluid to escape from the chamber 41, resulting in the bedplate and the supported structure returning to a lower position underthe influence of gravity.

With this improved construction it will be manifest that the bed haswithin itself a cushioning and adjustment combination, thereby impartingto the press an adjustment means in addition to the adjustment meansusually incorporated in the press, and that the fluid reservoir and thecushioning means constitute a part and parcel of the press, and thatmeans are provided which are controllable at will for locking the bed ofthe press against adjustment. Furthermore, while the cushioning meansand bed adjusting means are combined one within the other, thecushioning means operates independently of the adjustment of the pressbed.

In order to maintain the locking members 23 in looking engagement withthe members 21, after the parts have beenmoved to the postion shown inFigure 1, the nuts or collars- 26 are screwed upon the bolts 25, asshown in Figure 1. Before the locking member 23 can be shifted torelease the bed of the press the nuts or collars 20 must be screwed backupon the bolts 25 a suflicient distance to permit the member 23 to bemoved backwardly so that the teeth 31 of the member 23 will clear theteeth of the member 21.

A safety valve 55 may be provided for the chamber 41 if desired.

lVhile the preferred form of the invention has been herein shown anddescribed, it is to be understood that various changes may be made inthe details of construction and in the combination and arrangement ofthe several parts, within the scope of the claims, without departingfrom the spirit of this invention.

What is claimed as new is 1. A press of the character describedembodying a reciprocable ram, a bed with respect to which the ram isreciprocable, fluid pressure means constituting an integral part of thepress. for bodily adjusting the said bed, and means other than the saidadjusting means for locking said bed in its adjusted position.

2. A press of the character described embodying a reciprocable ram, abed with respect to which the ram is reciprocable, means for bodilyadjusting the said bed, and fluid pressure controlled means independentof the said adjusting means for locking said bed in its adjustedposition, all of said parts constituting a part and parcel of the press.

3. A press of the character described embodying a work supporting bed,fluid pressure means for bodily adjusting said bed at will, said fluidpressure means being-incorporated in the bed as a part and parcelthereof, and means other than said fluid pressure means for locking saidbed in its adjusted position.

a. A press of the character described embodying a work supporting bed,fluid pressure means for bodily adjusting the said bed, means forcontrolling said fluid pressure means at will and means other than thefirst two recited meansfor locking said bed in its adjusted position,the said fluid pressure means being incorporated in the press as a partand parcel thereof and disposed below the bed.

5. A press of the character described embodying a bed, fluid pressuremeans for bodily adjusting the bed, said fluid pressure meansconstituting a part and parcel of and incorporated within the press,mechanical locking means for maintaining the bed against adjustment,fluid pressure controlled means for rendering said locking means activeand inactive, and means for controlling at will the last recited fluidpressure.

6. A press of the character described embodying a bodilyadjustable bed,means for locking said bed against adjustment,'work holding meansmounted upon the bed, means for yieldingly resisting the movement of thework holding means in one direction with respect to the said bed, andmeans for causing aha last recited means to bodily adjust said 7. Apress of the character described embodying a bodily adjustable bed,means for locking the bed against such adjustment, means for controllingat will the first said means, work holding means mounted upon said bed,and means for yieldingly resisting the movement of the work holdingmeans in one direction with respect to said bed, the last recited meansoperating to bodily adjust said bed when the said locking means isrendered inactive.

8. A press of the character described embodying a bodily adjustable bed,fluid pressure controlled means for locking the bed against suchadjustment. means for controlling at will the first said means, workholding means mounted upon said bed, and means for yieldingly resistingthe movement of the work holding means in one direction with respecttosaid bed, the last recited means operating to bodily adjust said bedwhen the said locking means is rendered inactive.

9. A press of the character described embodying a bodilv adjustable bedmeans for locking the bed against such adjustment, means for controllingat will the first said means, work holding means mounted upon said bed,and fluid pressure means for yieldingly resisting the movement of thework sisting the movement of the work holding .taining the bed againstmeans with res t to the bed in one direction, the said work olderresisting means operating to bodily adjust said bed when said lookingmeans is rendered inactive, and means for controlling at will the saidlocking means.

11. A press of the character described embodying a bodily movable bed, awork holder movable with respect to the said bed, means for yieldinglyresisting movement of the work holder in one direction with respect tosaid bed, means for maintaining said bed against bodily movement, andmeans adapting said bed for bodily movement by the resisting agent ofthe work holder.

12. A press of the character described embodying a bodily movable bed, awork holder movable with respect to the said bed, means for 'eldinglyresisting movement of the work hold r in one direction with respect tosaid bed, fluid pressure means for maintaining said bed against bodilymovement, and means. adapting said bed for bodilymovement by the firstrecited means.

13. A press of the character described embodying a bodily movable bed, awork holder movable with respect to the bed, cushionin means forresisting the movement of the wor holder in one direction with respectto the bed, said cushionin means constituting a part and parcel of t epress, locking means other than the cushioningbmeans for mainodilymovement, said bed being bodily movable by the resisting agent of thecushioning means and means for controllin at will the said locking meansfor adapting t o bed for bodily movement by said cushioning means.

14. A press of the character described embodying a bodily movable bed, awork holder movable with respect to the bed, cushioning means forresisting the movementin one direction with respect to the bed, saidcushioning means constituting a part and parcel of the ress, mechanicalmeans for maintaining the bed against bodily movement, and fluidpressure means for controlling said mechanical means for adapting thebed of the press for bodily movement by the cushioning agent, the saidbed being bodily movable by the resisting agent.

15. A press of the character described embodying a bodily movable bed,cushioning means embodying a fluid reservoir as a part and parcel of thepress, means for looking at will the said bed against bodily movement,and means for controlling said locking means, said bed being bodilyadjustable by the fluid pressure in said reservoir when the lockingmeans is inactive. v

16. A press of the character described embodying a bodily movable bed,means for locking at will the said bed against such movement, means forcontrolling said locking means, and fluid pressure means for bodilyadjusting the bed when the locking means is inactive, said fluidpressure means embodying a reservoir constituting an integral part ofthepress.

17. A press of the character described embodyingan adjustable diesupporting bed, a work holder movable with and with respect to the bed,cushioning means for the work holder, said cushioning means embodying afluid containing reservoir forming a part and parcel of the press, andmeans for adjusting the said bed by the pressure of the fluid in saidcushioning means at will to compensate varying sizes of-dies and formaintaining the working height of the dies at approximately the samelevel.

18. A press of the character described em- I bodying a bodily adjustablebed, cushioning means for the work, said cushioning means embodying aself-contained fluid reservoir and being a part and parcel of the press,the cushioning agent being operable to bodily adjust said bed, and meansfor locking the press bed while the work cushioning means remainsactive.

19. A press of the character described embodying a bodily adjustable bedand work cushionin means, a controlling agent adapted to bot adjust thebed and control the cushion, and means for locking the bed againstbodily adjustment while the said cushion is maintained active.

20. A press of the character described embodying a bodily adjustable bedand work cushioning means, a fluid pressure agent common to both, andlocking means for the said bed, the said cushioning means being operableindependently of said locking means. I

21. A press of the character described embodying a bed, a ramreciprocable with a. set throw and providin with said bed a die spacetherebetween, an means for varying the size of said die space whilemaintaining f means associated with said bed, said fluid pressure blankholding means constituting a permanent part of the bed itself.

23. A press of the characterdescribed embodying a bed, a ramreciprocable with a set throw and providing with said bed a die spacetherebetween, said bed being bodily adjustable, fluid pressure blankholding means associated with the said bed, said fluid pressure blankholding means constituting a permanent part of the bed itself, saidblank holding means also constituting the means for adjusting the diespace between the bed and ram to Vary the said die space while theworking height of the die is maintained substantially the same.

24. In a press of the character described, an adjustable die supportingbed, a ram reciprocable with a set throw and providing with said bed adie space therebetween, and

fluid pressure means acting as a blank holding means and an adjustingmeans for vary ing the said die space.

'25. In a press of the character described,

2 a die supporting bed, a ram reciprocabie with .a set throw and forminwith said bed a die space therebetween, sai die space being variable,and said bed being adjustable and containing a fluid pressure blankholding means, said blank holding means being a permanent part ofthe beditself.

In testimony whereof we have signed our names to this specification, onthis 18th day of November, A. D. 1929.

RUDOLPH W. GLASNER.

FREDRICH J. RODE.

